Reed Switches

Littelfuse Reed Switches are ideal for battery-powered applications and automotive safety products. Reed switches have two ferromagnetic blades contained within a tubular glass envelope that is hermetically sealed at each end. Switches are activated by a permanent magnet or an electromagnet, and the reed switch and magnetic field combination is commonly known as the "magnetic circuit."

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Description Datasheet Availability Pricing (GBP) Filter the results in the table by unit price based on your quantity.
Qty. RoHS ECAD Model Switch Type
Contact Form
Operate Range
Voltage Rating AC
Color
Mounting Style
Termination Style
Packaging
Littelfuse Magnetic/Reed Switches MDSM-4B 5276 12-18
Datasheet
25In Stock
Min.: 1
Mult.: 1

Sub-Miniature SPST 12 AT to 18 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MISM-7LR 10-15AT Before Mod
Datasheet
1In Stock
MouseReel Available
Min.: 1
Mult.: 1
Reel: 3,000

SPST-NO 120 VAC SMD/SMT SMD/SMT Reel, Cut Tape, MouseReel
Littelfuse Magnetic/Reed Switches MITI-7L-10-15 Standard Sort
Datasheet
1,898Expected 05/08/2026
Min.: 1
Mult.: 1

SPST-NO 120 VAC PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches NO 22-28AT
Datasheet
1,000Expected 01/01/2027
Min.: 1
Mult.: 1

Miniature SPST 22 AT to 28 AT 265 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches NO 27-33AT
Datasheet
997Expected 29/12/2026
Min.: 1
Mult.: 1

Miniature SPST 27 AT to 33 AT 265 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches NO 27-38AT
Datasheet
2,000Expected 31/12/2026
Min.: 1
Mult.: 1

Miniature SPST 27 AT to 38 AT 265 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches NO 32-38AT
Datasheet
845Expected 17/05/2027
Min.: 1
Mult.: 1

Miniature SPST 32 AT to 38 AT 265 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches 17-23AT NO 100V 10W 19.7MM REED
Datasheet
750Expected 10/08/2026
Min.: 1
Mult.: 1

Miniature SPST 17 AT to 23 AT Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches 22-28AT NO 100V 10W 19.7MM REED
Datasheet
1,000Expected 10/03/2026
Min.: 1
Mult.: 1

Miniature SPST 22 AT to 28 AT Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches 22-33AT NO 100V 10W 19.7MM REED
Datasheet
1,000Expected 07/04/2026
Min.: 1
Mult.: 1

Miniature SPST 22 AT to 33 AT Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches 59170-1-T-00-A SENS
Datasheet
722Expected 31/03/2026
Min.: 1
Mult.: 1

Sub-Miniature SPST 15 AT to 20 AT 140 VAC Black PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MLRR-4 17-28
Datasheet
828Expected 04/05/2026
Min.: 1
Mult.: 1

Sub-Miniature SPST 17 AT to 28 AT 140 VAC Clear PCB Mount Axial Case
Littelfuse Magnetic/Reed Switches MDSM-10B 5430 10-25
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1
Mult.: 1

Sub-Miniature SPST 10 AT to 25 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MDSM-10B 5430 15-20
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 100

Sub-Miniature SPST 15 AT to 20 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MDSM-10B 5430 20-25
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 100

Sub-Miniature SPST 20 AT to 25 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MDSM-4B 5276 17-23
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1
Mult.: 1

Sub-Miniature SPST 17 AT to 23 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MDSM-4B 5276 22-28
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 100

Sub-Miniature SPST 22 AT to 28 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MDSM-4B 5276 27-33
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 1,000
Mult.: 100

Sub-Miniature SPST 27 AT to 33 AT 140 VAC Clear PCB Mount Axial Bulk
Littelfuse Magnetic/Reed Switches MDSM-4R 5277 17-28
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 3,000
Mult.: 3,000
Reel: 3,000

Sub-Miniature SPST 17 AT to 28 AT 140 VAC Clear PCB Mount Axial Reel
Littelfuse Magnetic/Reed Switches MDSM-4R 5277 22-28
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 3,000
Mult.: 3,000
Reel: 3,000

Sub-Miniature SPST 22 AT to 28 AT 140 VAC Clear PCB Mount Axial Reel
Littelfuse Magnetic/Reed Switches MDSM-4R 22-33
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 3,000
Mult.: 3,000
Reel: 3,000

Sub-Miniature SPST 22 AT to 33 AT 140 VAC Clear PCB Mount Axial Reel
Littelfuse Magnetic/Reed Switches MDSM-4R 5277 27-33
Datasheet
Non-Stocked Lead-Time 11 Weeks
Min.: 3,000
Mult.: 3,000
Reel: 3,000

Sub-Miniature SPST 27 AT to 33 AT 140 VAC Clear PCB Mount Axial Reel
Littelfuse Magnetic/Reed Switches SWITCH REED
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 3,000
Mult.: 3,000
Reel: 3,000

Sub-Miniature SPST 32 AT to 38 AT 140 VAC Clear PCB Mount Axial Reel
Littelfuse Magnetic/Reed Switches 59050 020 SENSOR
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 1
Mult.: 1

Miniature SPST Black PCB Mount Through Hole Bulk
Littelfuse Magnetic/Reed Switches 59050-1-U-00-0 SENS
Datasheet
Non-Stocked Lead-Time 16 Weeks
Min.: 1,000
Mult.: 200

Miniature SPST 22 AT to 28 AT 140 VAC Black PCB Mount Through Hole Bulk